Antitheft device



ANTITHEFT DEVI CE Filed March 20, 1924 l8 [7 100/ KAI/r01. a v m I In W Patented Dec. 9, 1924.

UNITED STATES LOUIS KAUFOLD, OF SAN FRANCISCO, CALIFORNIA.

ANTITHEFT DEVICE.

Application filed March 20, 1924.

T 0 all whom it may concern:

Be it known that I, LOUIS KAUroLo, a citizen of the United States, and a resident of San Francisco, county of San Francisco, State of California, have invented a new and useful Antitheft Device, of which the following is a specification.

The present invention relates to improvements in anti-theft devices for motor Vehicles or the like, and its particular object is to provide means in connection with the intake manifold of the internal combustion engine of a motor vehicle for rendering the engine inoperative. For this purpose it is proposed to provide a gate in the pipe ordinarily connecting the intake manifold with the carburetor and to provide means adapted to be operated from the drivers seat for manipulating the gate the latter being adapted to be swung from an inoperative position into an operative position in which it closes the intake port and prevents the charge from reaching the combustion chamber.

The preferred form of the invention is illustrated in the accompanying drawing in which Figure 1 shows a perspective view with my anti-theft device in place; Figure 2 a side view of the manifold having my attachment thereon, and Figure 3 a horizontal section taken along lines III-J11 of Figure 2. While I have shown only the preferred form of my invention, it should be understood that various changes or modifications may be made within the scope of the claims hereto attached without departing from the spirit of the invention.

The manifold (1) is formed in the usual manner presenting two arms (2) communicating with the combustion chamber and a central leg extending downwardly and connecting with a carburetor not shown in the drawing. The downwardly extending leg is provided with a lateral housing (4) providing a chamber (6) communicating with the inside of the leg lVhere the housing joins the leg a gate (,7) is pivoted in the housing, as shown at (8), the gate corresponding in size to the cross sec tion of the leg so that when the gate is lowered no charge can pass through the leg of the manifold. The housing (4) is shaped so that when the gate (7 is pulled into an inactive position by means of the spring (9) it rests against the Serial No. 709,591,

housing as shown at (11) and leaves the passage for the charge clear. The spring i secured th (7) by means of a perforated lug (1 and to the remote wall of the housing by means of a perforated lug (14). The pin (8) to which the gate (7) is secured and which is pivoted in the. bearings (16) and (1'?) is provided, outside of the housing with a handle (18) to which latter a rod (19) is pivotally connected. This rod preferably extends backward through the dashboard and terminates in an eye brought in registry with a perforation (22) in a stationery member (23) when the gate is closed so that the gate may be locked in that position by introducing a suitable locking means such as the padlock (24) through the two per forations (21) and (22).

The manner of using the device will be readily understood from the foregoing description. If the driver wishes to leave his machine he pulls on the rod (19) so as to lower the gate (7) and thereafter locks the rod to the stationary member (23) by means of the padlock (24). Any unauthorized person not in the possession of the key and not knowing about the particular kind of locking means used will try in vain to start the engine, while on the other hand, as soon as the padlock is removed the gate opens automatically due to the action of the spring (9).

I claim:

1. In combination with an internal combustion engine having an intake manifold and a pipe connecting the same with a carburetor, a means for closing said pipe comprising a housing formed integral with and extending laterally from the pipe so as to communicate with. the interior thereof, a gate hinged at the point of juncture between the housing and the pipe, a spring connecting the remote end of the gate with the far wall of the housing for normally maintaining the gate inactive and a handle associated with the gate allowing the same to be swung into an active position.

2. In combination with an internal combustion engine having an intake manifold and a pipe connecting the same with a car buretor, a means for closing said pipe comprising a housing formed integral with and extending laterally from the pipe so as to communicate with the interior thereof, a gate hinged at the point of juncture between the housing and the pipe, a spring connecting the remote end of the gate with the far wall of the housing for normally maintaining the gate inactive and a handle associated with the gate allowing the same to be swung into an active position, said handle being disposed on the outside of the housing.

in combination with an internal combustion engine having an intake manifold and a pipe connecting the sanxe with a carburetor a means for closing said pipe coinprlslng a housing iormed integral with and extending laterally from the pipe so as to communicate with the interior thereof, and a hinged at the point of the juncture between. the housing and the pipe formed to rest on the inner end of the housing when in an inactive position and to close the pipe when in an active position.

4. In combination with an internal coinbustion engine having an intake manifold and a pipe connecting the same with a carburetor, a means forclosing said pipe comprising a housing formed integral with and extending laterally from the pipe so as to communicate with the interior thereoi, and a gate hinged at the point of the juncture between the housing and thepipe formed to rest on the inner end of the housing when in an inactive position and to close the pipe when in an active position,

vielding means being provided for normall; maintaining the gate in an inactive position and a handle for swinging the same into an active position.

LOUIS KAUFOLD. 

